Press for printing spots of wax carbon on paper



D. L. BOYD Filed March 6, 1940 Oct. 28, 1941.

PRESS FOR PRINTING SPOTS OF WAX CARBON 0N PAPER N INVENTOR. flomun L 50m BY J! gm,

' ATTORNEY.

' is to be printed and the the proper degree.

Patented Oct. 28, 1941 mass roa'rnm'rma sro'rs or wax cannon on PAPER.

Donald L. Boyd, Hun

n, W. Va., assignor to tingto Carb-O-Spot Corporation, Athens, Ohio Application March 6, 1940, Serial No. 322,456 '1 Claims. (01401-122) My invention relates to that class of presses which are designed to print spots of wax carbon on different areas of paper. A press of this .type is described in United States Letters Patent to Rutkoskie, Reissue No. 19,642. That press however is a reciprocating type bed press of the Kelly type adapted to handle wax carbon. v

A Kelly press howeyer will not handle large quantities economically. As a consequence, it is very desirable to produce a rotary press capable of producing these kinds of wax carbon forms. Such presses have, however, been regarded as too expensive to justify their construction.

My invention has for its principal object to equip a press of this type with means whereby wax carbon can be applied to paper inspots of predetermined size and shape.

It may if desired be used as an attachment or built in as part of a carbon paper machine such as now used by carbon paper manufacturers. These machines apply carbon directly to the paper from rollers revolving against the surface of the paper, the paper being fed from a roll and rewound after the carbon has been applied.

By the use of my invention I provide an endless stencil having cut-away portions of the predetermined size and "shape for the desired spots and then running the stencil between the paper which ink fountain or feeding roller at the time the paper contactswith this rdller. Obviously, the uncut portion of the stencil will prevent contact of the inking roller or rollers with the paper while the cut-out portions of the stencil will permit the rollers carrying wax carbon to print on the paper the desired spots.

As described in the Rutkoskie and other patents of similar character, wax carbon is very difficult to handle and must be handled-at a critical temperature and the parts of the press that come in-contact with of my invention is to provide an improved stencil for this purpose.

A further. object is to provide an improved method of cutting the stencil. I

A further object is to provide means for controlling the movement of the stencil so as to insure proper registering.

My means of accomplishing the foregoing objects may be more readily-understood by having reference to the accompanying drawing, which:

A further object in I 7 ink fountain or distributing roller l2 and the Fig.1 is a perspective view of my improved W 66 Fig. 2 is a fragmentary detail view showing the drive for the stencil belt;

Fig. 3 is a. fragmentary detail view showing mehod of tightening the drive for stencil belt; an

Fig. 4 shows the stencil belt.

Similar reference numerals refer to parts throughout the entire specification.

In the drawing, I have illustrated only those parts of the press which are necessary to explain the operation of my invention. The omitted parts being standard and so well understood in means for manufacturing the similar the industry as to render specific detailed description of the same unnecessary.

As shown, the press consists of two side frames formed by uprights I, 2, 3 and 4, the uprights I and 2 being connected together by a base 5 while the uprights 3 and 4 are connected together by a base 6. They are also connected at the top by top bars 1.,

In the uprights 2 and 4 I mount a shaft 0 which carries the paper roll 9. The paper is carried from this roll around a cylinder 10 which is carried by a shaft Ii journalled in the upright members I and 3 of the frame. This cylinder is provided with means for heating the same (not shown). This can be done by suitable electric heating elements, or it may be done with a hot' fluid, as desired. This cylinder is in contact with the ink fountain or transfer roll H which dips into the ink fountain it. v

The paper passes over the cylinder iii and preferably over a cylinder i4 carried by a shaft the side frames. This cylinder the purpose of chilling the wax l5 journalled in is preferably for carbon and is preferably provided with means it must be heated to I which is preferably for circulating ice other standard form may be employed. I w

The paper is then carried up to. a rewind cylinder i6 upon which it is wound in theusual manner, this cylinder being mounted upon shaft i'l journalled in the uprights 2 and 4.

The stencil i8 consists'of an endless belt which is preferably formed of ordinary stencil paper laminated with a moisture proof material. I have found that Cellophane serves very satisfactorily for this purpose. Cutout portions i9 are formed in the stencil l8 of. the particular size desired. As will be clear from the drawings, the stencil it passes .between the water therethrough or any heated cylinder ill. The shaft 8 which for chilling the cylinder i4 carries the paper roll 9 wheels, are provided on a'shaft 25' mounted at is provided so as to set the shaft 26 for any oetoward the rewind cylinder l8 it passes over the cold cylinder ll may or may not be employed as stencil is controlled so that it cannot shift either is provided with a gear 20 which meshes with an intermediate gear 2| which in turn meshes with a gear 22 mounted upon a shaft 22 suitably Journalled in the side frame of the press. This shaft 23 carries a pair of wheels 24 provided with teeth 24' clearly seen in the detail view, Fig. 2,

, which teeth are fitted to and coincide with perforations or notches 25 formed in each edge of the stencil. A similar set of gearing andtoothed the upper part of the frame. An idler shaft 28 is provided at the forward part of the press and is provided with a pair of wheels formed with teeth 24' to engage the perforations or notches 25in the stencil. This shaft 28 however is an idler and is slidably mounted in slots 21 cut in the top bars I ofthe frame and isheld in place by means of a nut 28 thus providing for an adiustment of the stencil II. A graduated scale 2! sired size of stencil.

The operation of the device is as follows: the press is driven in any standard way (not shown) This drive draws the paper from the roll I over the cylinder It, as it passes intermediate the ink fountain roller 12, that roller will deposit the wax carbon from the heated ink fountain l2 on the area of the paper exposed'by the cut-away portions I! of the stencil. As the paper travels cold or chilling cylinder I I, if one is employed,

any of the standard ways in the manufacture of carbon paper before it reaches the rewinding cylinder ll upon which it is wound. As ex'- plained, it is essential that the ink fountain II, the ink fountain roller I 2, and the cylinder III must be heated to the critical temperature at which wax carbon-can be suitably worked. The

desired. In some instances, it has been found desirable to omit it.

It will beobvious that although I have shown a specific shape for cut-away portions on the stencil, that these can be of any size and shape desired. I merely use this type of cut-away portion because it-is the one which I have been ac- Hcustomed to print'on tax'ti'ckets. It .will also be clear from the foregoing description that the sideways or lengthwise, thus insuring proper re'g-' istration at all times while provision ofthe train of gears to move the stencil in synchronization with the paper roll and rewind cylinder insures 3 v exact registration at all times.

Having described my invention, what I regard I as new and desire by secure by Letters Patent is;

1. In a rotary press for printingwax carbon spots on a continuous paper web, having a'frame,

. a driven shaft on which is mounted a roll of paper. a heated ink fountain, a heated ink foun-v tain roller which contacts a heated cylinder-over which the web of paper passes, a rewinding roll 1 carried by a shaft, and a chilling cylinder between the heated cylinder and the rewinding jroll; an endless stencil havingcut-out portions of desired area, said stencil passing intermediate the-ink fountain roller and the heated cylinder,

and means to positively control the said stencil.

-' 2. In a rotary press for printing wax carbon spots on a continuous paper web, having a frame, a driven shaft on which is mounted a roll of paper, a heated ink fountain, an ink fountain roller, which contacts a heated cylinder over-- which the web of paper passes. and a rewinding 75 D8961. 4. In a rotary press for printing wax carbonspots on a continuous paper web, having a frame,

of perforations said driven shaft, an intermediate gear. a pair of the teeth. of which engase 'perforations' in said stencil, a shaft on after which it may be brushedor burnished in 'shaft in position.

a driven shaft on which is mounted a, roll of v'paper, 'a heated ink fountain, an ink fountain roller, which contacts a heated cylinder over which the web of paper passes, and a rewinding roll carried by a shaft; an endless stencil having cut-out portions of desired area, said stencil passing intermediate the ink fountain roller and the heated cylinder, said stencil having a plurality of perforations adjacent each edge, driven meanswhich engage said perforations, said driven means being synchronized with travel of the a driven shaft on which ismounted a roll of a heated ink fountain, 'an ink fountain rollerwhich contacts a heated cylinder 'over which the webs of paper passes, and a rewinding an endless stencil having cut-out portions of desired area. said stencil pass-' -ing intermediate the ink fountain roller and the said stencil having a plurality,

roll carried by a shaft;

heated cylinder,

adjacent each edge, a gear on notched wheels which said gears rotate, and a gear fixed on said shaft in mesh with the intermediate gear.

5. In a rotary press for printing wax carbon spots on a continuous paper web, having a frame, 'a driven shaft on'which is mounted a roll of paper,;a heated ink fountain, an ink fountain roller which contacts 7 an endless stencil having cut-out portions of desired area, said'stencil pass- 'ing intermediate and contacting both the ink fountain roller and the heated cylinder, and,

means to adjust said stencil.

, press for printing wax carbon spots on a continuous paper web, having a frame,

a heated cylinder; over which the web of paper passes. and a rewinding .'r oll carried by a haft;

6. In a rotary press for printing wax carbon spots on a continuous paper web, having a frame,

.a'driven shaft on which is mounted a roll of ink fountain paper, a heated ink. fountain, an roller which contacts a heated cylinder oveiwhich the web of paper passes, and a rewinding roll carried by a shaft: an endless stencil having cut-out portions of desired area, said stencil passins intermediate the ink fountain roller and the heated cylinder, means to adjust said stencil. said in slots in said frame, a pair of notched wheels on said shaft, a graduated scale on said frame adjacent said slot, and means to hold said idler 'I..In a rotary press for roll, a pair of notched each shaft, a gear adjacent one end of each shaft,

intermediate gears in mesh therewith. and driven means comprising an idler shaft slidably mounted printing wax carbon spots on a continuous paper web, having a frame,

wheelsflxedly secured to. 

